Currently Being ModeratedMay 27, 2013 7:40 AM (in response to sleazefrenzy)
When you disable iTunes Match on the iPhone you also need to launch the Music app and let the content clear out. Then you can re-enable the service and it should show you the new content.
Currently Being ModeratedMay 27, 2013 7:47 AM (in response to sleazefrenzy)
I don't have any direct experience with this, but as far as I understand it the "trimmed down" library option only works if you do that before you sign up for iTunes Match (it's popular among people who were already above that threshold, so couldn't even start using iTunes Match). I don't think there's any way to force iTunes Match to start from scratch with a new library.
You may have to let your iTunes Match subscription expire (make sure you turn of the auto-renewal), sometime after which your library will be removed from the cloud, then sign up for it again with your new library. Or wait for Apple to increase the song limit (that probably will happen, eventually, but who can say when?). Or maybe contact Apple support and see if you can convince them to terminate your account early so you can immediately sign up again?
And keep in mind before doing anything that songs you purchased from iTunes do not count towards the 25,0000, so if you're just looking at your total song count you may not need to do any of this. It's 25,000 matched songs in addition to your iTunes purchased songs.
Currently Being ModeratedMay 27, 2013 8:32 AM (in response to Joseph Delaney)
A good way to manage your library is by creating a second library which only shows the music that is in the cloud. You can delete the tracks that you don't want in the cloud from this library and will show as "removed" when you revert to your original library.
Your original library will still contain all your music but will ignore "Removed" tracks for the purpose match. You will of course have to start with your library limit below 25k.
I now have over 40k tracks in my library now with around 24,900 non purchased tracks in the cloud after a lot of work deleting then readding tracks to meet my requirements.
There is no need to cancel your itunes subscription and start again.